Within the pharmaceutical industry it is common practice to transfer analytical methods from one laboratory to other laboratories. An experiment or interlaboratory study is performed to estimate the repeatability, the intermediate precision, and the reproducibility of the analytical method. These measures of precision are quantified by appropriate sums of variance components from an analysis of...

Objectives: The performances of the Welch test, Alexander-Govern Brown-Forsythe test and James Second-Order which are among parametric alternatives one-way analysis variance included in literature, to protect Type-I error probability determined at beginning trial a nominal level, were compared with F test. Methods: Performance tests error; cases where variances homogeneous heterogeneous, sample...